Chandigarh, Oct 25 (IANS): Controversial Punjab Police "cat"-turned-dismissed cop Gurmeet Singh Pinky, a life-term convict in a murder case, died of a heart attack at a private hospital here on Wednesday.

He was suffering from dengue and hospitalised where he died of the cardiac arrest.

Also known as Pinky Cat, he underwent life sentence for killing Avtar Singh Gola in Ludhiana in 2001.

The term "cat" is for a "militant turned undercover police agent".

Pinki enjoyed the patronage of then state Director General of Police Sumedh Singh Saini and political clout and was released prematurely from the Nabha jail even before the completion of 10 years of sentence in June 2014.

He had gunned down a man, the only son of his parents, over a petty issue in January 2001.

In 2015, Pinky had uploaded a video on YouTube alleging that he was witness to at least 50 fake encounters. In his six-part video, Pinky has given graphic details of killings committed by senior police officers who got promotions via such acts.